CN209027095U - A kind of full premixed condensed exchanger - Google Patents
A kind of full premixed condensed exchanger Download PDFInfo
- Publication number
- CN209027095U CN209027095U CN201821846139.8U CN201821846139U CN209027095U CN 209027095 U CN209027095 U CN 209027095U CN 201821846139 U CN201821846139 U CN 201821846139U CN 209027095 U CN209027095 U CN 209027095U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- shell
- resolution element
- spiral heat
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a kind of full premixed condensed exchangers, belong to heat exchange unit field.The utility model includes accommodating shell, accommodates housing bottom and is provided with water inlet pipe, outlet pipe, accommodates case top and is additionally provided with outlet flue, accommodates enclosure interior and is equipped with spiral heat exchanger, the both ends of spiral heat exchanger are connected to water inlet pipe, outlet pipe respectively；It further include plate-like resolution element, resolution element is set to the axially rear of spiral heat exchanger, and resolution element is set to side of the outlet flue close to spiral heat exchanger, extends at the top of resolution element to the inner roof wall for accommodating shell, and connect with the inner roof wall for accommodating shell；Room in holding shell body is separated into the first collection chamber being connected to outlet flue, spiral heat exchanger and accommodates circulation chamber annular between shell by resolution element, and circulation chamber is connected to the first collection chamber；Flowing lumen is additionally provided with spoiler in room.The utility model increases flue gas in the indoor flowing time of accommodating chamber, improves rate of heat exchange.
Description
Technical field
The utility model belongs to heat exchange unit field, and in particular to a kind of complete mixed condensation exchanger of preheating.
Background technique
Existing full premixed condensed heat exchanger is most commonly used to the heat-exchange devices such as wall-hung boiler, and what air mixture burning generated contains
There is the flue gas of heat to pass through full premixed condensed heat exchanger, the water flowed through in full premixed condensed heat exchanger preheated,
Heat entrained by flue gas is absorbed and condenses, and the water after heating flows into wall-hung boiler again to be used by heat exchanger.
Existing full premixed condensed heat exchanger includes: the heat exchanger tube composition of shell and the annular successively coiled, and heat exchanger tube is
The structure of flat, shell wrap up heat exchanger tube, and shell is equipped with air inlet and air outlet, and the combustion gas after premixing enters from air inlet
The inner ring and burning, the hot-fluid for generation of burning of heat exchanger tube are spread around with the gap across heat exchanger tube, in the process,
Water in hot-fluid and heat exchanger tube carries out heat exchange；After hot-fluid passes through heat exchanger tube, collects inside the shell and flowed out through gas outlet complete
Premixed condensed heat exchanger.
It is disclosed in the Chinese utility model patent " heat exchange unit and method " that Authorization Notice No. is CN106461266B
A kind of heat exchange unit, the heat exchange unit include: receiving shell comprising rear wall, antetheca and perimeter side walls；Spiral-shaped
Heat exchanger comprising for being wound in the way of multiple coils around the longitudinal axis of helical structure for the first heat transfer fluid flowing
At least one tubular pipeline and be mounted in the receiving shell；The drainage area of second heat transfer fluid, second heat
It transmits fluid to be used to be limited in the shell with the first heat transfer fluid heat exchange, the drainage area, be handed over the heat
Parallel operation is coaxially and relative to the heat exchanger in inside；For collecting the first collection chamber of the second heat transfer fluid,
It is defined as relative to the heat exchanger in outside, described in the radial outer wall of the heat exchanger and the receiving shell
Between perimeter side walls；And the second collection chamber for collecting second heat transfer fluid, at least partly by least one
A resolution element limits boundary.The resolution element is mounted on axially external position at described point relative to the heat exchanger
It limits between element, the perimeter side walls and rear wall or antetheca for accommodating shell for collecting second heat transfer fluid
Second collection chamber, by this method, first collection chamber and second collection chamber by least one first
Channel is in fluid communication with each other, at least one described first passage is configured to allow for second heat transfer fluid and the shell
The perimeter side walls answer it is parallel and neighboringly flowed with the perimeter side walls.The resolution element 14 includes heat exchange department
Point, the heat exchange section, which is contacted and is configured at least part of the end coil of the heat exchanger, allows the heat
Heat exchange is carried out between the coil-shaped part of exchanger and second collection chamber, and the heat exchange unit further includes allowing
At least one second channel that fluid is flowed out from second collection chamber, the second channel are limited to second collecting chamber
In the periphery of room, between the axial end and the rear wall or the antetheca of the perimeter side walls for accommodating shell.
Above-mentioned improve in the prior art uniformly improves the first heat transmitting by improving Installation Flexibility and axial structure
Heat-exchange capacity between fluid and the second heat transfer fluid, but the separation unit in the technical solution of the prior art makes
The second heat transfer fluid after burning, such as burning gases caused by burner cracking can be dredged away along resolution element.
Therefore, applicant have observed that, which can also improve rate of heat exchange.
Utility model content
The purpose of this utility model is that: a kind of full premixed condensed exchanger is provided, which can have
Effect delays flue gas to be discharged, and then improves rate of heat exchange.
The technical solution adopted in the utility model is as follows:
A kind of full premixed condensed exchanger, including shell is accommodated, the receiving housing bottom is provided with water inlet pipe, water outlet
It manages, is additionally provided with outlet flue at the top of the receiving shell, the receiving enclosure interior is equipped with spiral heat exchanger, the spiral shell
The both ends of rotation heat exchanger are connected to the water inlet pipe, outlet pipe respectively；It further include plate-like resolution element, the resolution element is set
It is placed in the axially rear of the spiral heat exchanger, and the resolution element is set to the outlet flue close to spiral heat exchanger
Side, the top of the resolution element extends to the inner roof wall for accommodating shell, and with the inner roof wall for accommodating shell
Connection；Room in the holding shell body is separated into the first collection chamber being connected to outlet flue by the resolution element, spiral heat is handed over
Annular circulation chamber, the circulation chamber are connected to first collection chamber between parallel operation and receiving shell；The circulation
Spoiler is additionally provided in chamber.
Further, the outlet flue is that the strip-shaped hole for accommodating case top is arranged in.
Further, the trailing flank of the resolution element extends to form a boss along the axis of the spiral heat exchanger,
The boss is connect with the inner sidewall for accommodating shell.
Further, the front end face of the resolution element is provided with groove compatible with the boss, in the groove
Adiabatic disks are provided with, the outer diameter of the adiabatic disks is adapted with the internal diameter of the spiral exchanger.
Further, the spoiler is set as cartridge type spoiler, and the section of the spoiler is set as wavy.
Further, the spoiler passes through card slot or screws tight device and is fixed on the receiving shell.
Further, the material of the spoiler is high-temperature refractory.
Further, be additionally provided with discharge outlet at the top of the receiving shell, be provided on the discharge outlet with it is described go out
The opening of mouth connection by card slot and screws tight device and is connected with discharge cover on the discharge outlet.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1, in the utility model, the space accommodated between shell and spiral heat exchanger is divided by cigarette by resolution element
Gas drainage area, the flow chamber of annular, the first collection chamber, meanwhile, the top of resolution element upwardly extends and accommodates shell
Inner roof wall connection, so that flue gas can only be from that can only flow, then from the stream of annular from flue gas drainage area to the flow chamber of annular
Dynamic chamber is flowed to cylindrical first collection chamber.Meanwhile spoiler 7 is additionally provided in annular flow chamber, so that flue gas
Flowing time in entire accommodating chamber 1 lengthens, to improve rate of heat exchange.
2, in the utility model, by setting strip shape gob for outlet flue, so that the apparatus structure of the utility model is more
It is compact, while flowing time of the flue gas in entire accommodating chamber 1 is further increased, improve rate of heat exchange.
3, in the utility model, spoiler is arranged wavy, greatly improves flow-disturbing effect, increases flue gas whole
Flowing time in a accommodating chamber 1, improves rate of heat exchange.
4, in the utility model, smoke evacuation lid is separated with shell is accommodated, so that being convenient to clean the inboard of discharge cover, discharge outlet
Space.
Detailed description of the invention
Fig. 1 is the perspective view of the utility model；
Fig. 2 is the top view of the utility model；
Fig. 3 is the A-A cross-sectional view of Fig. 2；
Fig. 4 is the main view of the utility model；
Fig. 5 is the perspective view that the utility model removes smoke evacuation lid；
Fig. 6 is the smoke evacuation lid schematic diagram of the utility model；
Fig. 7 is that the schematic diagram after spoiler is removed in the utility model；
Marked in the figure: 1- receiving shell, 101- water inlet pipe, 102- outlet pipe, 104- smoke outlet, 2- spiral heat exchanger,
3- resolution element, 301- boss, 4- adiabatic disks, the first collection chamber of 5-, 6- circulation chamber, 7- spoiler, 8- smoke evacuation lid, 20-
Burner.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
A kind of full premixed condensed exchanger, including shell 1 is accommodated, it accommodates 1 bottom of shell and is provided with water inlet pipe 101, water outlet
Pipe 102, the top for accommodating shell 1 are additionally provided with outlet flue 103, accommodate and are equipped with spiral heat exchanger 2, spiral inside shell 1
The both ends of heat exchanger 2 are connected to water inlet pipe 101, outlet pipe 102 respectively；It further include plate-like resolution element 3, resolution element 3 is set
It is placed in the axially rear of spiral heat exchanger 2, and resolution element 3 is set to outlet flue 103 close to the one of spiral heat exchanger 2
The top of side, resolution element 3 extends to the inner roof wall for accommodating shell 1, and connect with the inner roof wall for accommodating shell 1；Resolution element 3
1 interior room of shell will be accommodated to be separated into the first collection chamber 5 being connected to outlet flue 103, spiral heat exchanger 2 and accommodate shell 1
Between annular circulation chamber 6, circulation chamber 6 is connected to the first collection chamber 5；Spoiler 7 is additionally provided in circulation chamber 6.
Further, outlet flue 103 is that the strip-shaped hole for accommodating 1 top of shell is arranged in.
Further, the trailing flank of resolution element 3 extends to form a boss 301, boss along the axis of spiral heat exchanger 2
301 connect with the inner sidewall for accommodating shell 1.
Further, the front end face of resolution element 3 is provided with groove compatible with boss 301, is provided in groove absolutely
The outer diameter of hot plate 4, adiabatic disks 4 is adapted with the internal diameter of spiral exchanger 2.
Further, spoiler 7 is set as cartridge type spoiler, and the section of spoiler 7 is set as wavy.
Further, spoiler 7 passes through card slot or screws tight device and is fixed on receiving shell 1.
Further, the material of spoiler 7 is high-temperature refractory.
Further, the top for accommodating shell 1 is additionally provided with discharge outlet 104, is provided on discharge outlet 104 and outlet flue
The openings of 103 connections by card slot and screw tight device and are connected with discharge cover 8 on discharge outlet 104.
Working principle: it in the utility model, accommodates shell 1 and includes upper housing, lower case, antetheca, lower case and lower case
Locking is bolted, upper housing and lower case collectively form the accommodating chamber of a cup-shaped, and spiral heat exchanger 2 is coaxially mounted to
In the accommodating chamber, meanwhile, antetheca is closed by the accommodating chamber.Burner 20 is installed, burner 20 is with dismountable side on antetheca
Formula is simultaneously fixed on antetheca in a sealing fashion again, and the axis for accommodating the Inner cylindrical section of shell 1 is protruded on burner 20
With the axis collinear of spiral heat exchanger 2.
Water inlet pipe 101, outlet pipe 102 has been arranged in a staggered manner in the bottom of lower case.Water inlet pipe 101 is being accommodated far from antetheca setting
On shell 1, correspondingly, outlet pipe 102 is arranged on accommodating shell 1 close to antetheca.Water inlet pipe 101, outlet pipe 102 are and upper casing
Body is connected to the accommodating chamber that lower case is constituted.
Outlet flue 103 is provided at the top of upper housing, the accommodating chamber that outlet flue 103 is also constituted with upper housing and lower case connects
It is logical.
Preferably, outlet flue 103 is set as strip-shaped hole, with the speed for delaying flue gas to be discharged.The utility model is provided simultaneously
The compactness of device.
Preferably, shell 1 is accommodated to be made up of the high performance plastics material of aluminium, steel or polyphenylene sulfide.
Spiral heat exchanger 2 is mounted in accommodating chamber, and spiral exchanger 2 is the tubular pipeline for water flowing, the tubular bulb
Road is wound in the way of multiple coils around the axis of accommodating chamber.There are gap between the flat surface of two continuous coils,
Flue gas can be flowed along this gap, be connect when the flue gas inside spiral heat exchanger 2 circulates outward with increasing with spiral heat exchanger 2
Contacting surface product.One end of coil is connected to water inlet pipe 101, and the other end is connected to outlet pipe 102.One end of coil can also be sheathed on into
In water pipe 101, the other end is sheathed in outlet pipe 102.
Preferred tubular pipeline is set as flat tube, so that increasing spiral shell in the fixed more circle numbers of small space winding
It revolves heat exchanger and accommodates the contact area of cavity space, so that circulates in spiral heat exchanger 2 more fully connects with flue gas
Touching improves rate of heat exchange.
Spiral heat exchanger 2 is made of the metal material with high heat conductance, such as steel or aluminium.
The rear portion of spiral heat exchanger 2 is equipped with the resolution element 3 of plate-like, and the top of resolution element 3 upwardly extends, until
It connect and seals with the side hole wall of outlet flue 103.The accommodating chamber accommodated in shell 1 is divided into 3 regions by spiral heat exchanger.
First is that the flue gas drainage area that the internal diameter for being located at spiral heat exchanger 2 limits, i.e. combustion zone.Second is that the outer diameter of spiral heat exchanger 2
The flow chamber 6 of the annular limited between the inner sidewall of accommodating chamber, flue gas is from the gap between the coil of spiral heat exchanger 2
It is flowed by this region to outlet flue 103 after outflow.In the flow chamber 6, the direction that flue gas is finally presented is from receiving shell 1
Interior close front wall section flow direction accommodates the rear end face of shell 1.Third is that the rear end face of spiral heat exchanger 2 and receiving shell 1
The first collection chamber of cylinder 5 that interior rear wall limits.In order to avoid flue gas is directly passed to cylindrical the from flue gas drainage area
One collection chamber 5 and reduce rate of heat exchange, resolution element 3 is provided on the rear end face of spiral heat exchanger 2.Resolution element 3
Be adapted, and be in contact with spiral heat exchanger 2, meanwhile, the top of resolution element 3 also upwardly extends, until with upper housing
Inner roof wall connection.In this way, resolution element 3 separates cylindrical first collection chamber 5 and flue gas drainage area, so that flue gas can only be from
Flue gas drainage area is flowed to the flow chamber 6 of annular, then from the flow chamber 6 of annular to cylindrical first collection chamber 5 stream
It is dynamic.Simultaneously as the top of resolution element 3 is also connect with the side hole wall of outlet flue 103, i.e., outlet flue 103 only with cylinder
The circulation of first collection chamber 5, flue gas can only flow to outlet flue 103 from by cylindrical first collection chamber 5, other regions are not straight
It connects and is connected to outlet flue 103.In this way, the speed dredged and the flue gas of the generation of burner 20 has been delayed to discharge, so that flue gas
Spiral heat exchanger can further be come into full contact with, be heated, improve rate of heat exchange.
Along the axially extending formation boss 301 of spiral heat exchanger 2, boss 301 and receiving on the rear end face of resolution element 3
The interior rear wall of shell 1 connects, and the first collection chamber 5 of cylinder is further isolated into the first collection chamber 5 of annular, into one
The speed that step delays flue gas to be discharged.And flue gas can be promoted near water inlet pipe 101 in the increased resident time of the first collection chamber 5
The heat of coil optimizes the heat exchange point of this exchanger so that the water that water inlet pipe 101 enters is effectively heated at the very start
Cloth.Resolution element 3 directly with the rear end face contact of spiral heat exchanger 2 so that in spiral heat exchanger 2 heat distribution more
Uniformly.
3 front end face of resolution element is provided with groove compatible with boss 301, adiabatic disks 4 are provided in groove, is insulated
The outer diameter of disk 4 is adapted with the internal diameter of spiral exchanger 2.Therefore, a part for the heat that adiabatic disks 4 can be absorbed is transmitted to point
It from element 3, is then passed in the end coil of spiral heat exchanger 2, increases the rate of heat exchange of spiral heat exchanger.
It is provided with spoiler 7 in the flow chamber 6 of annular, spoiler 7 is set as cartridge type, and the section of spoiler 7 is set
It is set to waveform.Meanwhile the both ends of spoiler 7 by card slot or screw tight device be fixed on accommodate shell 1 interior rear wall on
On antetheca.By this method, flue gas flows, flue gas after the outflow of flue gas drainage area along the wavy inner sidewall of spoiler 7
Flowing velocity in the flow chamber 6 of annular is further slowed down, and flue gas further adds spiral heat exchanger 2
Heat improves rate of heat exchange.
The material of spoiler 7 is high-temperature refractory, can be set to Stainless steel 316 L-type number.
Smoke outlet 104 and discharge cover 8, which are each attached to, in the prior art accommodates on shell 1.But in this application, by
It is defined as in outlet flue 103 close to the strip shape gob for accommodating 1 rear end face of shell.Therefore, cigarette can be inevitably resulted in use
Gas is largely accumulated in the inboard of smoke evacuation lid 8, which is not convenient to clean, and uses the outlet flue that may cause strip shape gob for a long time
103 blockings.Therefore, the application separates smoke evacuation lid 8 with shell 1 is accommodated, so that being convenient to clean in discharge cover 8, discharge outlet 104
Side space.
For the ease of installing discharge cover 8, and raising sealing performance, the side wall end face of discharge outlet 104 passes through card slot and spiral shell
Bolt nut is connect with discharge cover.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (8)
1. a kind of full premixed condensed exchanger, including shell (1) is accommodated, receiving shell (1) bottom is provided with water inlet pipe
(101), outlet pipe (102) are additionally provided with outlet flue (103) at the top of the receiving shell (1), in the receiving shell (1)
Portion is equipped with spiral heat exchanger (2), the both ends of the spiral heat exchanger (2) respectively with the water inlet pipe (101), outlet pipe
(102) it is connected to；It further include plate-like resolution element (3), it is characterised in that: the resolution element (3) is set to the spiral heat and hands over
The axially rear of parallel operation (2), and the resolution element (3) is set to the outlet flue (103) close to spiral heat exchanger (2)
Side, the top of the resolution element (3) extend to the inner roof wall for accommodating shell (1), and with accommodate shell (1)
Inner roof wall connection；Described receiving shell (1) interior room is separated into first be connected to outlet flue (103) by the resolution element (3)
Annular circulation chamber (6), the circulation chamber (6) between collection chamber (5), spiral heat exchanger (2) and receiving shell (1)
It is connected to first collection chamber (5)；Spoiler (7) are additionally provided in the circulation chamber (6).
2. a kind of full premixed condensed exchanger according to claim 1, it is characterised in that: the outlet flue (103) is to set
Set the strip-shaped hole at the top of receiving shell (1).
3. a kind of full premixed condensed exchanger according to claim 1, it is characterised in that: after the resolution element (3)
Axially extending formation one boss (301) of the side along the spiral heat exchanger (2), the boss (301) and the holding shell
The inner sidewall of body (1) connects.
4. a kind of full premixed condensed exchanger according to claim 3, it is characterised in that: before the resolution element (3)
End face is provided with the compatible groove with the boss (301), is provided with adiabatic disks (4) in the groove, the adiabatic disks (4)
Outer diameter be adapted with the internal diameter of the spiral heat exchanger (2).
5. a kind of full premixed condensed exchanger according to claim 1, it is characterised in that: the spoiler (7) is set as
The section of cartridge type spoiler, the spoiler (7) is set as wavy.
6. a kind of full premixed condensed exchanger according to claim 5, it is characterised in that: the spoiler (7) passes through card
Slot screws tight device and is fixed on the receiving shell (1).
7. a kind of full premixed condensed exchanger according to claim 5, it is characterised in that: the material of the spoiler (7)
For high-temperature refractory.
8. a kind of full premixed condensed exchanger according to claim 1, it is characterised in that: the top for accommodating shell (1)
Portion is additionally provided with discharge outlet (104), and the opening being connected to the outlet flue (103) is provided on the discharge outlet (104), described
Pass through card slot on discharge outlet (104) and screw tight device and is connected with discharge cover (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821846139.8U CN209027095U (en) | 2018-11-09 | 2018-11-09 | A kind of full premixed condensed exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821846139.8U CN209027095U (en) | 2018-11-09 | 2018-11-09 | A kind of full premixed condensed exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209027095U true CN209027095U (en) | 2019-06-25 |
Family
ID=66909229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821846139.8U Active CN209027095U (en) | 2018-11-09 | 2018-11-09 | A kind of full premixed condensed exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209027095U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282497A (en) * | 2018-11-09 | 2019-01-29 | 成都实好电器有限公司 | A kind of full premixed condensed exchanger |
-
2018
- 2018-11-09 CN CN201821846139.8U patent/CN209027095U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282497A (en) * | 2018-11-09 | 2019-01-29 | 成都实好电器有限公司 | A kind of full premixed condensed exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101004239B1 (en) | Condensation heat exchanger with a gas and air heat exchanger and recuperator | |
| RU2317491C2 (en) | Condensation heat exchanger with a double bundle of tubes | |
| JPS60500182A (en) | Water heater for condensing combustion products | |
| SU1400518A3 (en) | Vertical radiator tank | |
| WO2014044205A1 (en) | Forced spiral finned coil and finned serpentine coil condensation heat-supplying heat exchanger | |
| CN209027095U (en) | A kind of full premixed condensed exchanger | |
| CN204100585U (en) | Condensing heat exchanger and there is its forced exhaust gas water heater | |
| WO2023087568A1 (en) | Boiler flue gas treatment system having efficient air preheater | |
| CN109282497A (en) | A kind of full premixed condensed exchanger | |
| CN201277550Y (en) | Integration type self-inverting heat-accumulation combustor | |
| CN106152160A (en) | Gas heating stove chimney | |
| CN207214464U (en) | Circular stainless steel condensing type highly effective heat exchanger | |
| CN211823968U (en) | Flue gas heat exchanger | |
| JP2648792B2 (en) | Gas instantaneous water heater | |
| EP2499438B1 (en) | Heat exchanger with improved exhaust gas discharge device | |
| CN209588005U (en) | A kind of steam boiler that heat efficiently utilizes | |
| NL8403236A (en) | High efficiency central heating boiler - uses spirally wound heat exchanger around combustion chamber and around coaxial insulation block | |
| CN216953545U (en) | Gas water heating equipment | |
| CN208566843U (en) | A kind of solar energy hot blast heating system with air purifier | |
| CN105823218A (en) | High-efficient condensing flue gas waste heat recovery device | |
| EP2499437B1 (en) | Heat exchanger with improved thermal efficiency | |
| CN205351323U (en) | Combustor heat exchanger assembly | |
| KR20010079051A (en) | High pressure steam boiler | |
| CN220062125U (en) | Gas water heater | |
| KR200238406Y1 (en) | Briquette hot air boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |